Galvanized steel grating introduction

 

 

 Our company has more than ten years experience in manufacturing and exporting productions with best quality and competitive price and faster delivery time. 

1>Material :Steel & Low carbon steel, etc.

2>Surface process: hot-dipped galvanized ,electro-galvanized, spraying and soaking.

 

 

 

 

2.Specification of galvanized steel grating

1>Shape of bearing bar: plain or serrated  type.

2>Bearing Bar Pitch (center to center):according to client's requirement and 30, 40, 60mm are recommended.
3>Bearing Bar (Load Bar) Specifications of thickness and depth(mm): 20 x 3 to 100 x 10 etc; 

4>Cross bar pitch :38.1, 40, 50, 60, 76, 80, 100, 101.6, 120mm, 2' ' & 4' ' etc

3.The manufacturing process of galvanized steel grating

The factory of our company has strong ability in manufacturing production by large quantity. We can assure you about the quality with competitive price,and we can  manufacturer all kinds of galvanized steel grating.

 

 Welded process

 

 

 

 

Galvanized process

 

 

 

4.The application of  galvanized steel grating

The products are widely used in steel structure platforms,stair treads, floors, drainages, well covers , sidewalks,decks etc. We can also design and manufacture special steel gratings on our customer's requirement. 

 

 

 

 

 

 

 5.The installation of galvanized steel grating

Productions made by our company are easy to install,there are two ways to install it.Weld it directly for Permanent using or  use clips to fix it for re-movement,it's very easy to install it with our special design.

 

 

6.Galvanized grating features

(1)Attractive appearance: Simple outline.silver colour,and modern.

(2)Optimum water draining: Water leakage area reaches 83.3%,which is more than two times larger  than that of cast iron.

(3)Hot-dip galvanizing: Good antirust performance,maintenance free and replacement free.

(4)Design of preventing theft: The cover is connected with the frame by gemel,which ensures protection against theft,safety,and convenient opening.

(5)Saving investment: With large span,the cost is lower than that of cast iron when under heavy load.And the replacement expenses in case of theft and crushing will be saved.

(6)High strength:With strength: With strength and toughness far higher than those of cast iron,it can be used in the environment with large span  and heavy load,such as the wharf and the airport.

(7)Many specifications available: The requirement of different environments,loads, spans,sizes and shapes can be satisfied.

 

7.Standards of galvanized steel grating.

 

	Steel grating standard	Steel standard	Galvanizing standard
China standard	YB/T 4001.1-2007	GB700-88	GB/T13912-2002
USA standard	ANSI/NAAMM(MBG531)	ASTM(A36)	ASTM(A123)
U.K. standard	BS4592	BS4360(43A)	BS729
Australia standard	AS1657	AS3679	AS1650

 

8.Tolerance of galvanized steel grating

 

The allowed deviation of length is +0/-5mm, while the allowed deviation of width is +/-5 mm. 
The non-perpendicularity of bearing bar is allowed no more than 10% of width of bearing bar. 
Cross bar surface should not surpass bearing bar surface 1mm, beginning & end of cross bar should not surpass the end surfaces of two sides of grating 2mm. 

 

 

 

 

 

time of deilivery: 15-20 days after receiving 30% deposit

 

Payment: 30% by T/T in advance, the balance by T/T against the fax copy of B/L.

 

 Why choose Haiao ?

 

1)We have a standard manufacturing line and a complete quality ensuring system for high quality galvanized steel grating reaching your  requirements.

 

2)We own most advanced production equipments.The CNC press-welding meshine is controled by computers.

 

3)We have more than ten years experiences about manufacturing and exporting.

 

4)We own more than ten senior engineers,they can promise our product technology in the industry in a leading level.